Pembuatan Kawat Monofilamen Superkonduktor MgB2 Secara In-Situ Menggunakan Metode Powder-In-Tube (PIT)

Rasyadi, Muhammad Emir Hanif (2017) Pembuatan Kawat Monofilamen Superkonduktor MgB2 Secara In-Situ Menggunakan Metode Powder-In-Tube (PIT). UNSPECIFIED thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Telah diteliti pembuatan kawat monofilamen superkonduktor
MgB2 dengan menggunakan metode powder-in-tube dengan variasi
komposisi Mg terhadap B yakni 0,90, 1,00 dan 1,10 sedangkan
komposisi Boron tetap. Serbuk prekursor yang digunakan adalah serbuk
Mg (98%) dan serbuk B (95%). Bahan dicampur dan digerus selama 30
menit lalu dimasukkan ke dalam tabung stainless steel 316. Selanjutnya
Tabung diberikan perlakuan mekanis rolling untuk membuat kawat
monofilamennya. Kawat kemudian dipotong menjadi ukuran lebih kecil
kemudian dipanaskan pada suhu 800oC selama 2 jam. Hasil pemanasan
kemudian diuji suhu kritisnya lalu dikarakterisasi dengan XRD dan
SEM.Dari hasil pengujian didapat bahwa pembuatan kawat secara in-
situ dengan metode powder-in-tube dapat membuat kawat monofilamen
superkonduktor MgB2 dengan fasa dominan MgB2 sekitar 95% dan
memiliki fasa pengotor MgO sekitar 5%. MgO terbentuk akibat oksidasi
yang terjadi pada serbuk MgB2 didalam kawat. Komposisi Mg:B yang
optimal untuk membuat kawat ini ada pada komposisi 1:2 karena
memiliki kurva resistivitas yang bagus dengan nilai Tc Onset sebesar
41,67 K dan Tc Zero 40,89 K. Akan tetapi terdapat porositas pada kawat
yang terjadi karena reduksi volume dari reaksi Mg+2B ditambah
terjadinya evaporasi pada Mg
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In this research we have studied the making of MgB2
superconducting monofilament wire using powder-in-tube method with
variation of Mg composition to B ie 0.90, 1.00 and 1.10, while Boron
remains The precursor used is Mg powder (98%) and powder B (95%)
Both materials are mixed and then crushed with agate mortar for 30
minutes and then put into the tube stainless steel 316. The tube is then
subjected to a mechanical treatment of rolling to form its monofilament
wire. The wire is then cut and sintered at a temperature of 800o C for
2 hours. After that we test the critical temperature then characterize the
samples by XRD and SEM From the result of this research it was found
that in-situ wire-making by powder-in-tube method can make MgB2
superconducting monofilament wire with MgB2 as the dominant phase
around 95% and MgO as the impurity phase around 5%. MgO is
formeddue to the oxidation occurring in the MgB2 powder inside the
wire. The optimal Mg:B composition to make this wire is in the 1:2
composition Because it has a good resistivity curve with a high enough
Tc Onset that is 41,67 K and Tc Zero 40,89 K. However, there is a
porosity in the wire due to the volume reduction of the Mg + 2B reaction
plus the evaporation of Mg

Item Type:	Thesis (UNSPECIFIED)
Uncontrolled Keywords:	superkonduktivitas, magnesium diboride, PIT, komposisi, superconductivity, composition
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA645 Structural analysis (Engineering) T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK7872 Electric current converters, Electric inverters. T Technology > TN Mining engineering. Metallurgy
Divisions:	Faculty of Industrial Technology > Physics Engineering > 30201-(S1) Undergraduate Thesis
Depositing User:	Muhammad Emir Hanif Rasyadi
Date Deposited:	13 Oct 2017 02:34
Last Modified:	14 Aug 2025 07:13
URI:	http://repository.its.ac.id/id/eprint/46832

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